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19. It costs 8704 to fence a square field at the rate o!く0.50 pen20. A room is 8 m long, 7.6 m wide and 3.5 m high. The walls are to be distempered, allowing 25 m2 fordoors, windows, etc. Find the total area to be distempered. |
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Answer» Total surface area of cubiod = 2(lb+bh+lh);so 2(8*7.6 +7.6*3.5+8*3.5);2(60.8 + 26.6 + 28);2(115.4);230.8 m square;so door is 25 m square;so total = 230.8-25;205.8 m square no it is of Perimeter and area.and answer is 84.2m2 how |
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